سنسور و مبدل سنسور جریان

Product Attributes

Introduction

TMCS1123 is a current-isolated Hall-effect current sensor with industry-leading isolation and accuracy. The sensor delivers an output voltage proportional to the input current across all sensitivity options, with excellent linearity and low drift. The precision signal conditioning circuit with built-in drift compensation achieves a maximum sensitivity error of less than 1.4% over temperature and lifetime without system-level calibration; after a one-time calibration at room temperature, the maximum sensitivity error including lifetime and temperature drift is less than 0.9%.

AC or DC input current flows through an internal conductor, and the resulting magnetic field is measured by an on-chip Hall-effect sensor. The coreless design eliminates the need for magnetic concentrators. Differential Hall sensors reject external stray magnetic field interference. Low conductor resistance extends the measurable current range to ±96A while minimizing power loss and simplifying thermal management requirements. The insulation capability withstands 5kV_RMS, with a minimum creepage distance and clearance of 8mm, providing a highly reliable enhanced working voltage over lifetime. Integrated shielding enables excellent common-mode rejection and transient immunity.

Fixed sensitivity allows the device to operate from a single supply of 3V to 5.5V, eliminating ratiometric errors and improving power supply noise rejection.

Features

• High continuous current capability: 80ARMS
• Robust reinforced isolation
• High accuracy
  • Sensitivity error: ±0.1%
  • Sensitivity thermal drift: ±20ppm/°C
  • Sensitivity lifetime drift: ±0.2%
  • Offset error: ±0.2mV
  • Offset thermal drift: ±2μV/°C
  • Offset lifetime drift: ±0.2mV
  • Nonlinearity: ±0.1%
• High immunity to external magnetic fields
• Precision zero-current reference output
• Fast response
  • Signal bandwidth: 250kHz
  • Response time: 1µs
  • Propagation delay: 110ns
  • Overcurrent detection response: 100ns
• Overcurrent detection blanking (TMCS1123D71)
• Operating supply range: 3V to 5.5V
• Bidirectional and unidirectional current sensing
• Multiple sensitivity options:
  • Range from 25mV/A to 150mV/A
• Safety-related certifications (planned)
  • UL 1577 component recognition program
  • IEC/CB 62368-1

Applications

• Solar energy
• Motor control
• EV charging
• Power supply
• Industrial AC/DC applications